Valve-bushing.



A of this character is employed.

UNrri-:io 'STATES Patented September 22, 1903. l

`PATinvT Critics..v

SPECIFICATION forming part of Letters lfatent No.' 739,614, dated September 22, 1903.

Animation' fumi umh 25,1903.

Serial No. 149,516. (No modelJ This'invention relates to certain new and useful improvements in valve-bushings, and is particularly adapted for use in connection with that class of valves employed in pumps and the like, though the' invention is applicable as well in any connection where a valve The object of my invention is to provide a substantially non-destructive and non-corrodible valve-bushing whereby to materially lengthen the life of a valve and insure a more perfect working of the pump. In valves of this character the weakest'pcint of the same is at the opening which receives the stem, and due to the constant movement of the valve this portion of the valve soon becomes worn, so as to render the valve ineifective and requires the replacing of the same.' The valves as generally employed are constructed entirely of rubber, as this has been found by far the most desirable material, 4especially in connection with pumps where the water is impregnated with chemicals which readily destroy the elements of most materials..

My invention resides in the provision of a bushing so secured in the valve as to be permanently held in position and which is constructed of a material to effectually withstand the constant working ofthe valve and the pounding of the same upon its seat.

Briefly described my invention consists in providing the valve-bodyusually constructed of rubber and provided with a central opening the walls of which are providedwith recesses or grooves, preferably dovetailed in shape. The opposite sides of the valve-body around the central opening are cored out and this cored-out portion together with the grooves or recesses in the walls of the central opening are .filled with molten Babbitt metal,

which when it hardens forms a bushing firmly l held in position in the valve-body and which receives all of the wear to which the valve is subjected. v

'In describing the invention in detail reference is had to the vaccompanying' drawings, forming a part of this specification, and wherein like numerals of reference indicate like parts throughout the several views,in whichliig'ure l is a central vertical sectional view through a portion of the pump, showing my improved valves in position therein. Fig. 2 is a detail perspective view of the valve-body as constructed to receive the metal bushing. Fig. 3 is a detail perspective view of the complete valve, and Fig. 4 is a cross-sectional view of the same.

In the accompanying drawings, l indicates the valve-body, preferably composed of hard rubber, though'it will be evident that other material may be employed. This valve-body is provided with a central opening 2 to receive the stem 3A of the valve. The walls of this opening 2 are provided with recesses or grooves 4, preferably made dovetail in shape, as shown, and the opposite side faces of the valve-body are cored out on a bevel, as seen at 5 in Figs.' 2 and 4, which cored-out portion together with the grooves Li are lled with molten metal, preferably Babbitt metal, as this material has been found to be the most satisfactory. This molten metal forms a bushing 6, which is effectually held in position by reason of a portion thereof lying within the cored-out portion 5 on opposite'sides of the valve and the projections which are in the dovetailed grooves 4.

In practice the valve is constructed asseen in Fig. 2 of the drawings. The coreis then placed in the central opening 2, and themolten metal is run into the cored-out portion and into the grooves and instantly hardens, producing the desired bushing.

In practice I have demonstrated that a valve constructed in this manner will last several times longer than the valve in which the body proper comes in direct working contact with the stem. In practice the valves are held to their seats by means of springs 7, interposed between the valves and nuts 8 on the stems of said valves. However, I do not vided with a central opening and having beveled side faces surrounding said central opening provided with recesses, of a Babbitt metal bushing countersunk in said side faces of the valve and having projections engaging in the recesses in the va1ve-body, substantially as described. l

2. In combination with the valve-body' formed with an opening and having its opposite sides adjacent said opening cored out on a bevel, a bushing extending through said opening and having its ends tting iii said cored-out portions of the valve-body.

3. In combination with the valve-body, pro# vided with an opening and recesses communicating therewith, the opposite faces of said body adjacent said opening and recesses being cut away, a bushing having its ends enlarged and received in the cut-away portions of said valve-body, and projections arranged between the enlarged ends of said bushing arranged in the recessesof said valve-body.

et. Ina device of the type set forth a bushing having enlarged ends, projections arranged between said ends, said projections tapering inwardly.

In testimony whereof I aflix my signature in the presence of two witnesses.

Hf C. EVERT, A. M. WILSON. 

